./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:44:10,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:44:10,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:44:10,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:44:10,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:44:10,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:44:10,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:44:10,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:44:10,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:44:10,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:44:10,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:44:10,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:44:10,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:44:10,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:44:10,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:44:10,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:44:10,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:44:10,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:44:10,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:44:10,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:44:10,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:44:10,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:44:10,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:44:10,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:44:10,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:44:10,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:44:10,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:44:10,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:44:10,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:44:10,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:44:10,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:44:10,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:44:10,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:44:10,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:44:10,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:44:10,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:44:10,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:44:10,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:44:10,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:44:10,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:44:10,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:44:10,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:44:10,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:44:10,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:44:10,694 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:44:10,694 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:44:10,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:44:10,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:44:10,695 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:44:10,696 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:44:10,696 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:44:10,696 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:44:10,697 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:44:10,697 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:44:10,697 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:44:10,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:44:10,698 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:44:10,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:44:10,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:44:10,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:44:10,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:44:10,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:44:10,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:44:10,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:44:10,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:44:10,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:44:10,701 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:44:10,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:44:10,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:44:10,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:44:10,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:44:10,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:44:10,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:44:10,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:44:10,703 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:44:10,703 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d3b64744a19af136ca9c439b2264a15465f658e2e3d4a576a98d96e4b8aff92 [2021-12-21 22:44:10,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:44:10,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:44:10,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:44:10,929 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:44:10,930 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:44:10,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2021-12-21 22:44:11,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951617bf0/2c835a4cad2d4599bac6a2f742f79420/FLAG3d5823247 [2021-12-21 22:44:11,426 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:44:11,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2021-12-21 22:44:11,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951617bf0/2c835a4cad2d4599bac6a2f742f79420/FLAG3d5823247 [2021-12-21 22:44:11,454 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/951617bf0/2c835a4cad2d4599bac6a2f742f79420 [2021-12-21 22:44:11,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:44:11,457 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:44:11,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:44:11,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:44:11,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:44:11,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5edb9637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11, skipping insertion in model container [2021-12-21 22:44:11,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:44:11,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:44:11,676 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2021-12-21 22:44:11,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:44:11,684 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:44:11,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.4.1.ufo.BOUNDED-8.pals.c[8246,8259] [2021-12-21 22:44:11,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:44:11,744 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:44:11,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11 WrapperNode [2021-12-21 22:44:11,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:44:11,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:44:11,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:44:11,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:44:11,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,777 INFO L137 Inliner]: procedures = 22, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 260 [2021-12-21 22:44:11,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:44:11,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:44:11,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:44:11,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:44:11,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:44:11,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:44:11,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:44:11,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:44:11,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (1/1) ... [2021-12-21 22:44:11,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:11,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:11,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:11,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 22:44:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:44:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:44:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:44:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:44:11,940 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:44:11,941 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:44:12,261 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:44:12,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:44:12,273 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 22:44:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:44:12 BoogieIcfgContainer [2021-12-21 22:44:12,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:44:12,277 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:44:12,278 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:44:12,281 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:44:12,281 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:44:12,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:44:11" (1/3) ... [2021-12-21 22:44:12,282 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e20420d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:44:12, skipping insertion in model container [2021-12-21 22:44:12,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:44:12,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:44:11" (2/3) ... [2021-12-21 22:44:12,283 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e20420d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:44:12, skipping insertion in model container [2021-12-21 22:44:12,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:44:12,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:44:12" (3/3) ... [2021-12-21 22:44:12,284 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c [2021-12-21 22:44:12,321 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:44:12,321 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:44:12,322 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:44:12,322 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:44:12,322 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:44:12,322 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:44:12,322 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:44:12,322 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:44:12,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:12,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-12-21 22:44:12,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:44:12,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:44:12,373 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:12,374 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:12,374 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:44:12,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:12,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-12-21 22:44:12,399 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:44:12,399 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:44:12,400 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:12,401 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:12,409 INFO L791 eck$LassoCheckResult]: Stem: 60#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 48#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 61#L163true assume !(0 == ~r1~0);init_~tmp~0#1 := 0; 25#L163-1true init_#res#1 := init_~tmp~0#1; 59#L256true main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 71#L312true assume !(0 == main_~i2~0#1); 17#L312-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 11#L322-2true [2021-12-21 22:44:12,414 INFO L793 eck$LassoCheckResult]: Loop: 11#L322-2true assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 8#L61true assume !(0 != ~mode1~0 % 256); 15#L77true assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite4#1 := ~send1~0; 52#L77-2true ~p1_new~0 := (if node1_#t~ite4#1 % 256 <= 127 then node1_#t~ite4#1 % 256 else node1_#t~ite4#1 % 256 - 256);havoc node1_#t~ite4#1;~mode1~0 := 1; 58#L61-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 9#L89true assume !(0 != ~mode2~0 % 256); 57#L102true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 55#L102-2true ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 21#L89-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 62#L114true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 13#L117true assume !(node3_~m3~0#1 != ~nomsg~0); 34#L117-1true ~mode3~0 := 0; 49#L114-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 37#L139true assume !(0 != ~mode4~0 % 256); 40#L152true assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite7#1 := ~send4~0; 23#L152-2true ~p4_new~0 := (if node4_#t~ite7#1 % 256 <= 127 then node4_#t~ite7#1 % 256 else node4_#t~ite7#1 % 256 - 256);havoc node4_#t~ite7#1;~mode4~0 := 1; 22#L139-2true assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 73#L264true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 20#L264-1true check_#res#1 := check_~tmp~1#1; 74#L284true main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 26#L349true assume !(0 == assert_~arg#1 % 256); 39#L344true assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 11#L322-2true [2021-12-21 22:44:12,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:12,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1932780748, now seen corresponding path program 1 times [2021-12-21 22:44:12,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:12,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881353779] [2021-12-21 22:44:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:12,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:12,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:44:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881353779] [2021-12-21 22:44:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881353779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:44:12,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:44:12,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:44:12,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103764769] [2021-12-21 22:44:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:44:12,656 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:44:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1135428887, now seen corresponding path program 1 times [2021-12-21 22:44:12,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:12,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089608437] [2021-12-21 22:44:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:12,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:12,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:44:12,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089608437] [2021-12-21 22:44:12,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089608437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:44:12,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:44:12,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:44:12,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880255631] [2021-12-21 22:44:12,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:44:12,863 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:44:12,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:44:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 22:44:12,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 22:44:12,901 INFO L87 Difference]: Start difference. First operand has 76 states, 75 states have (on average 1.6933333333333334) internal successors, (127), 75 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:44:13,008 INFO L93 Difference]: Finished difference Result 122 states and 194 transitions. [2021-12-21 22:44:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 22:44:13,015 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 194 transitions. [2021-12-21 22:44:13,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-12-21 22:44:13,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 113 states and 163 transitions. [2021-12-21 22:44:13,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2021-12-21 22:44:13,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2021-12-21 22:44:13,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 163 transitions. [2021-12-21 22:44:13,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:44:13,033 INFO L681 BuchiCegarLoop]: Abstraction has 113 states and 163 transitions. [2021-12-21 22:44:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states and 163 transitions. [2021-12-21 22:44:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2021-12-21 22:44:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.352112676056338) internal successors, (96), 70 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2021-12-21 22:44:13,057 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 96 transitions. [2021-12-21 22:44:13,057 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 96 transitions. [2021-12-21 22:44:13,057 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:44:13,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 96 transitions. [2021-12-21 22:44:13,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-12-21 22:44:13,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:44:13,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:44:13,060 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,060 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,060 INFO L791 eck$LassoCheckResult]: Stem: 281#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 273#L163 assume 0 == ~r1~0; 251#L164 assume ~id1~0 >= 0; 238#L165 assume 0 == ~st1~0; 239#L166 assume ~send1~0 == ~id1~0; 256#L167 assume 0 == ~mode1~0 % 256; 230#L168 assume ~id2~0 >= 0; 231#L169 assume 0 == ~st2~0; 285#L170 assume ~send2~0 == ~id2~0; 276#L171 assume 0 == ~mode2~0 % 256; 274#L172 assume ~id3~0 >= 0; 275#L173 assume 0 == ~st3~0; 284#L174 assume ~send3~0 == ~id3~0; 221#L175 assume 0 == ~mode3~0 % 256; 222#L176 assume ~id4~0 >= 0; 278#L177 assume 0 == ~st4~0; 262#L178 assume ~send4~0 == ~id4~0; 263#L179 assume 0 == ~mode4~0 % 256; 216#L180 assume ~id1~0 != ~id2~0; 217#L181 assume ~id1~0 != ~id3~0; 259#L182 assume ~id1~0 != ~id4~0; 260#L183 assume ~id2~0 != ~id3~0; 243#L184 assume ~id2~0 != ~id4~0; 244#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 252#L163-1 init_#res#1 := init_~tmp~0#1; 253#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 280#L312 assume !(0 == main_~i2~0#1); 240#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 229#L322-2 [2021-12-21 22:44:13,061 INFO L793 eck$LassoCheckResult]: Loop: 229#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 223#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 224#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 242#L65-1 ~mode1~0 := 0; 277#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 226#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 227#L92 assume !(node2_~m2~0#1 != ~nomsg~0); 269#L92-1 ~mode2~0 := 0; 247#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 248#L114 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 232#L117 assume !(node3_~m3~0#1 != ~nomsg~0); 233#L117-1 ~mode3~0 := 0; 261#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 264#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 265#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 235#L142-1 ~mode4~0 := 0; 236#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 249#L264 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1);check_~tmp~1#1 := 0; 245#L264-1 check_#res#1 := check_~tmp~1#1; 246#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 254#L349 assume !(0 == assert_~arg#1 % 256); 255#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 229#L322-2 [2021-12-21 22:44:13,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 1 times [2021-12-21 22:44:13,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837855572] [2021-12-21 22:44:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:44:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:44:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -843208267, now seen corresponding path program 1 times [2021-12-21 22:44:13,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066991880] [2021-12-21 22:44:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:13,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:44:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066991880] [2021-12-21 22:44:13,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066991880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:44:13,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:44:13,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 22:44:13,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560592026] [2021-12-21 22:44:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:44:13,232 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:44:13,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:44:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 22:44:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 22:44:13,233 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. cyclomatic complexity: 26 Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:44:13,269 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2021-12-21 22:44:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 22:44:13,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 98 transitions. [2021-12-21 22:44:13,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-12-21 22:44:13,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 93 transitions. [2021-12-21 22:44:13,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 71 [2021-12-21 22:44:13,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2021-12-21 22:44:13,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 93 transitions. [2021-12-21 22:44:13,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:44:13,274 INFO L681 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-12-21 22:44:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 93 transitions. [2021-12-21 22:44:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-12-21 22:44:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.3098591549295775) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2021-12-21 22:44:13,278 INFO L704 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-12-21 22:44:13,278 INFO L587 BuchiCegarLoop]: Abstraction has 71 states and 93 transitions. [2021-12-21 22:44:13,278 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:44:13,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 71 states and 93 transitions. [2021-12-21 22:44:13,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2021-12-21 22:44:13,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:44:13,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:44:13,280 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,280 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,281 INFO L791 eck$LassoCheckResult]: Stem: 438#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 429#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 430#L163 assume 0 == ~r1~0; 408#L164 assume ~id1~0 >= 0; 395#L165 assume 0 == ~st1~0; 396#L166 assume ~send1~0 == ~id1~0; 413#L167 assume 0 == ~mode1~0 % 256; 387#L168 assume ~id2~0 >= 0; 388#L169 assume 0 == ~st2~0; 442#L170 assume ~send2~0 == ~id2~0; 433#L171 assume 0 == ~mode2~0 % 256; 431#L172 assume ~id3~0 >= 0; 432#L173 assume 0 == ~st3~0; 441#L174 assume ~send3~0 == ~id3~0; 378#L175 assume 0 == ~mode3~0 % 256; 379#L176 assume ~id4~0 >= 0; 435#L177 assume 0 == ~st4~0; 419#L178 assume ~send4~0 == ~id4~0; 420#L179 assume 0 == ~mode4~0 % 256; 373#L180 assume ~id1~0 != ~id2~0; 374#L181 assume ~id1~0 != ~id3~0; 416#L182 assume ~id1~0 != ~id4~0; 417#L183 assume ~id2~0 != ~id3~0; 400#L184 assume ~id2~0 != ~id4~0; 401#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 409#L163-1 init_#res#1 := init_~tmp~0#1; 410#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 437#L312 assume !(0 == main_~i2~0#1); 397#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 386#L322-2 [2021-12-21 22:44:13,281 INFO L793 eck$LassoCheckResult]: Loop: 386#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 380#L61 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 381#L65 assume !(node1_~m1~0#1 != ~nomsg~0); 399#L65-1 ~mode1~0 := 0; 434#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 383#L89 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 384#L92 assume !(node2_~m2~0#1 != ~nomsg~0); 426#L92-1 ~mode2~0 := 0; 404#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 405#L114 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 389#L117 assume !(node3_~m3~0#1 != ~nomsg~0); 390#L117-1 ~mode3~0 := 0; 418#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 421#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 422#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 392#L142-1 ~mode4~0 := 0; 393#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 406#L264 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 375#L265 assume ~r1~0 >= 4; 376#L269 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 402#L264-1 check_#res#1 := check_~tmp~1#1; 403#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 411#L349 assume !(0 == assert_~arg#1 % 256); 412#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 386#L322-2 [2021-12-21 22:44:13,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 2 times [2021-12-21 22:44:13,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517038595] [2021-12-21 22:44:13,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,296 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:44:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,313 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:44:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash 9853125, now seen corresponding path program 1 times [2021-12-21 22:44:13,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709329733] [2021-12-21 22:44:13,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:13,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:13,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:44:13,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709329733] [2021-12-21 22:44:13,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709329733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:44:13,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:44:13,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:44:13,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292523742] [2021-12-21 22:44:13,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:44:13,339 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:44:13,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:44:13,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:44:13,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:44:13,340 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. cyclomatic complexity: 23 Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:44:13,367 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2021-12-21 22:44:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:44:13,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 146 transitions. [2021-12-21 22:44:13,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-12-21 22:44:13,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 107 states and 146 transitions. [2021-12-21 22:44:13,374 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-21 22:44:13,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-21 22:44:13,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 146 transitions. [2021-12-21 22:44:13,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:44:13,376 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-12-21 22:44:13,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 146 transitions. [2021-12-21 22:44:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-12-21 22:44:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2021-12-21 22:44:13,384 INFO L704 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-12-21 22:44:13,384 INFO L587 BuchiCegarLoop]: Abstraction has 107 states and 146 transitions. [2021-12-21 22:44:13,384 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:44:13,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 107 states and 146 transitions. [2021-12-21 22:44:13,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-12-21 22:44:13,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:44:13,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:44:13,386 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,386 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:44:13,387 INFO L791 eck$LassoCheckResult]: Stem: 624#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(34, 2);call #Ultimate.allocInit(12, 3);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0; 615#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~ret25#1, main_#t~ret26#1, main_#t~post27#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet8#1;havoc main_#t~nondet8#1;~id1~0 := main_#t~nondet9#1;havoc main_#t~nondet9#1;~st1~0 := main_#t~nondet10#1;havoc main_#t~nondet10#1;~send1~0 := main_#t~nondet11#1;havoc main_#t~nondet11#1;~mode1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id2~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st2~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send2~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode2~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id3~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st3~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send3~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode3~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id4~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st4~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send4~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode4~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 616#L163 assume 0 == ~r1~0; 594#L164 assume ~id1~0 >= 0; 578#L165 assume 0 == ~st1~0; 579#L166 assume ~send1~0 == ~id1~0; 598#L167 assume 0 == ~mode1~0 % 256; 570#L168 assume ~id2~0 >= 0; 571#L169 assume 0 == ~st2~0; 629#L170 assume ~send2~0 == ~id2~0; 619#L171 assume 0 == ~mode2~0 % 256; 617#L172 assume ~id3~0 >= 0; 618#L173 assume 0 == ~st3~0; 628#L174 assume ~send3~0 == ~id3~0; 567#L175 assume 0 == ~mode3~0 % 256; 568#L176 assume ~id4~0 >= 0; 622#L177 assume 0 == ~st4~0; 605#L178 assume ~send4~0 == ~id4~0; 606#L179 assume 0 == ~mode4~0 % 256; 557#L180 assume ~id1~0 != ~id2~0; 558#L181 assume ~id1~0 != ~id3~0; 602#L182 assume ~id1~0 != ~id4~0; 604#L183 assume ~id2~0 != ~id3~0; 586#L184 assume ~id2~0 != ~id4~0; 587#L185 assume ~id3~0 != ~id4~0;init_~tmp~0#1 := 1; 595#L163-1 init_#res#1 := init_~tmp~0#1; 596#L256 main_#t~ret25#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret25#1;havoc main_#t~ret25#1; 623#L312 assume !(0 == main_~i2~0#1); 580#L312-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 581#L322-2 [2021-12-21 22:44:13,387 INFO L793 eck$LassoCheckResult]: Loop: 581#L322-2 assume !!(main_~i2~0#1 < 8);assume { :begin_inline_node1 } true;havoc node1_#t~ite4#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 659#L61 assume !(0 != ~mode1~0 % 256); 658#L77 assume ~send1~0 != ~nomsg~0 && ~p1_new~0 == ~nomsg~0;node1_#t~ite4#1 := ~send1~0; 657#L77-2 ~p1_new~0 := (if node1_#t~ite4#1 % 256 <= 127 then node1_#t~ite4#1 % 256 else node1_#t~ite4#1 % 256 - 256);havoc node1_#t~ite4#1;~mode1~0 := 1; 627#L61-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite5#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 656#L89 assume !(0 != ~mode2~0 % 256); 652#L102 assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite5#1 := ~send2~0; 651#L102-2 ~p2_new~0 := (if node2_#t~ite5#1 % 256 <= 127 then node2_#t~ite5#1 % 256 else node2_#t~ite5#1 % 256 - 256);havoc node2_#t~ite5#1;~mode2~0 := 1; 649#L89-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite6#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 647#L114 assume !(0 != ~mode3~0 % 256); 646#L127 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite6#1 := ~send3~0; 645#L127-2 ~p3_new~0 := (if node3_#t~ite6#1 % 256 <= 127 then node3_#t~ite6#1 % 256 else node3_#t~ite6#1 % 256 - 256);havoc node3_#t~ite6#1;~mode3~0 := 1; 643#L114-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite7#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 642#L139 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 640#L142 assume !(node4_~m4~0#1 != ~nomsg~0); 637#L142-1 ~mode4~0 := 0; 635#L139-2 assume { :end_inline_node4 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 634#L264 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 <= 1; 633#L265 assume !(~r1~0 >= 4); 599#L268 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0; 600#L269 assume ~r1~0 < 4;check_~tmp~1#1 := 1; 584#L264-1 check_#res#1 := check_~tmp~1#1; 585#L284 main_#t~ret26#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret26#1;havoc main_#t~ret26#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 632#L349 assume !(0 == assert_~arg#1 % 256); 660#L344 assume { :end_inline_assert } true;main_#t~post27#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post27#1;havoc main_#t~post27#1; 581#L322-2 [2021-12-21 22:44:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash -24004505, now seen corresponding path program 3 times [2021-12-21 22:44:13,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030322146] [2021-12-21 22:44:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,400 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:44:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:44:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1926820423, now seen corresponding path program 1 times [2021-12-21 22:44:13,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373328060] [2021-12-21 22:44:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,459 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:44:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:44:13,480 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:44:13,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1410036755, now seen corresponding path program 1 times [2021-12-21 22:44:13,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:44:13,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418998388] [2021-12-21 22:44:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:44:13,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:44:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:13,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:44:13,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418998388] [2021-12-21 22:44:13,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418998388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:44:13,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:44:13,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:44:13,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359324337] [2021-12-21 22:44:13,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:44:14,435 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:44:14,436 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:44:14,436 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:44:14,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:44:14,437 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:44:14,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:14,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:44:14,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:44:14,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2021-12-21 22:44:14,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:44:14,438 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:44:14,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:14,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:15,170 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-12-21 22:44:33,682 WARN L227 SmtUtils]: Spent 18.39s on a formula simplification. DAG size of input: 325 DAG size of output: 173 (called from [L 68] de.uni_freiburg.informatik.ultimate.icfgtransformer.transformulatransformers.SimplifyPreprocessor.process) [2021-12-21 22:44:33,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:44:33,747 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:44:33,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:33,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:33,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-21 22:44:33,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:44:33,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:44:33,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:44:33,783 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post27#1=0} Honda state: {ULTIMATE.start_main_#t~post27#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:44:33,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:33,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:33,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:33,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:33,820 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:44:33,820 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:44:33,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-21 22:44:33,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:33,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:33,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:33,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:33,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:44:33,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:44:33,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-21 22:44:34,024 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:44:34,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:34,028 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:44:34,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:44:34,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:44:34,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:44:34,028 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:44:34,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:34,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:44:34,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:44:34,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.4.1.ufo.BOUNDED-8.pals.c_Iteration4_Loop [2021-12-21 22:44:34,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:44:34,028 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:44:34,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:44:34,722 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-12-21 22:44:52,903 WARN L227 SmtUtils]: Spent 18.13s on a formula simplification. DAG size of input: 325 DAG size of output: 173 (called from [L 68] de.uni_freiburg.informatik.ultimate.icfgtransformer.transformulatransformers.SimplifyPreprocessor.process) [2021-12-21 22:44:52,972 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:44:52,976 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:44:52,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:52,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:52,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:52,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-21 22:44:52,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:52,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:52,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:52,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:52,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:52,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:52,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:52,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,046 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,055 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-21 22:44:53,079 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,108 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-21 22:44:53,111 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,122 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-21 22:44:53,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,193 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,222 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-21 22:44:53,228 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,237 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,237 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,251 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-21 22:44:53,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,303 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:44:53,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,341 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:44:53,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:44:53,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:44:53,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:44:53,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:44:53,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:44:53,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:44:53,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:44:53,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-21 22:44:53,365 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:44:53,369 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:44:53,369 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:44:53,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:44:53,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:44:53,372 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:44:53,426 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:44:53,426 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:44:53,426 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:44:53,427 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0#1) = -2*ULTIMATE.start_main_~i2~0#1 + 15 Supporting invariants [] [2021-12-21 22:44:53,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-21 22:44:53,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:53,453 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:44:53,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:44:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:53,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:44:53,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:44:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:44:53,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:44:53,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:44:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:44:53,741 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 22:44:53,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 107 states and 146 transitions. cyclomatic complexity: 40 Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:53,786 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 107 states and 146 transitions. cyclomatic complexity: 40. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 184 states and 263 transitions. Complement of second has 4 states. [2021-12-21 22:44:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 22:44:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:53,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2021-12-21 22:44:53,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 29 letters. Loop has 25 letters. [2021-12-21 22:44:53,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:44:53,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 54 letters. Loop has 25 letters. [2021-12-21 22:44:53,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:44:53,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 93 transitions. Stem has 29 letters. Loop has 50 letters. [2021-12-21 22:44:53,791 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:44:53,792 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 263 transitions. [2021-12-21 22:44:53,793 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:44:53,793 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 0 states and 0 transitions. [2021-12-21 22:44:53,794 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:44:53,794 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:44:53,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:44:53,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:44:53,794 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:44:53,794 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:44:53,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:44:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:44:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:44:53,795 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:44:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:44:53,795 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-21 22:44:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 22:44:53,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-21 22:44:53,796 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:44:53,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 22:44:53,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:44:53,797 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:44:53,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:44:53,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:44:53,797 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:44:53,797 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:44:53,797 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:44:53,797 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 22:44:53,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:44:53,798 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:44:53,798 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:44:53,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:44:53 BoogieIcfgContainer [2021-12-21 22:44:53,810 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:44:53,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:44:53,811 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:44:53,812 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:44:53,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:44:12" (3/4) ... [2021-12-21 22:44:53,815 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:44:53,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:44:53,816 INFO L158 Benchmark]: Toolchain (without parser) took 42359.33ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 67.7MB in the beginning and 93.7MB in the end (delta: -26.0MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,817 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 73.8MB in the beginning and 73.7MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:44:53,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.30ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 75.2MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.98ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,823 INFO L158 Benchmark]: Boogie Preprocessor took 30.50ms. Allocated memory is still 102.8MB. Free memory was 72.6MB in the beginning and 71.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,824 INFO L158 Benchmark]: RCFGBuilder took 467.53ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 54.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,826 INFO L158 Benchmark]: BuchiAutomizer took 41532.63ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 54.3MB in the beginning and 93.7MB in the end (delta: -39.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-12-21 22:44:53,826 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 155.2MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:44:53,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 73.8MB in the beginning and 73.7MB in the end (delta: 23.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.30ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 75.2MB in the end (delta: -7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.98ms. Allocated memory is still 102.8MB. Free memory was 74.7MB in the beginning and 72.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.50ms. Allocated memory is still 102.8MB. Free memory was 72.6MB in the beginning and 71.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.53ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 54.3MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 41532.63ms. Allocated memory was 102.8MB in the beginning and 155.2MB in the end (delta: 52.4MB). Free memory was 54.3MB in the beginning and 93.7MB in the end (delta: -39.5MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 155.2MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 15 + -2 * i2 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 40.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 42 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 107 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 278 mSDsluCounter, 1195 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 752 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 443 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital197 mio100 ax100 hnf100 lsp84 ukn76 mio100 lsp100 div172 bol100 ite100 ukn100 eq164 hnf94 smp71 dnf16751 smp27 tf100 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 22:44:53,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-21 22:44:54,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE